I put a tubeless ready tire on a tubeless ready wheel, but I used a tube. I did this a couple of days ago. It slowly loses pressure from 50 psi to 30 over 24 hours. this has happened twice now. Is there just a leak in the tube? Maybe. But I am thinking that the tire may be sealing well enough against the rim, so that air is trapped between the tube and the tire. As the tire slowly lets the air out, the pressure goes down, even though there is no leak in the tube. I just pumped it up again. What say you?